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Opiliaceae (Bentham) Valeton

山柚子科 shan you zi ke

Authors: Huaxing Qiu & Paul Hiepko

Evergreen trees, shrubs, or lianas, root parasites. Stipules absent. Leaves alternate, simple, margin entire, penninerved. Inflorescences axillary or cauliflorous, spikes, racemes, or panicles [or umbels, in Africa]; bracts narrowly ovate or scale-like. Flowers small, actinomorphic, (3-)5-merous, bisexual or unisexual and plants then dioecious or gynodioecious (in Champereia). Perianth free or tepals partly united, valvate. Stamens as many as and opposite tepals, free or filaments inserted on tepals; anthers 2-loculed, introrse, dehiscence longitudinal. Disk intrastaminal, lobed, annular, or cupular. Ovary superior or semi-sunken in disk, 1-loculed; ovule 1, pendulous, unitegmic, tenuinucellar; placentation free-central. Style short or none; stigma entire or shallowly lobed. Fruit a drupe. Seed coat thin; endosperm oily; embryo terete, with 3 or 4 linear cotyledons.

Ten genera and 33 species: widespread in tropical and subtropical regions; five genera and five species in China.

Chen Pang-yu. 1988. Opiliaceae. In: Kiu Hua-shing & Ling Yeou-ruenn, eds., Fl. Reipubl. Popularis Sin. 24: 46–52.

1 Inflorescences panicles, sometimes axillary, usually on branches and trunk.   5 Champereia
+ Inflorescences spikes or racemes, axillary, rarely on old branches or trunk.   (2)
2 (1) Flowers in spikes; bracts triangular, persistent.   1 Cansjera
+ Flowers in racemes; bracts broadly ovate to ovate, caducous.   (3)
3 (2) Lianas, sometimes shrubs; rachis of racemes tomentose; drupe 2.5-3 cm.   2 Opilia
+ Trees or shrubs; rachis of racemes glabrous; drupe 1-1.8 cm.   (4)
4 (3) Tepals united at base; filaments flattened; disk cupular; drupe 1.5-1.8 cm.   3 Lepionurus
+ Tepals free; filaments filiform; disk annular; drupe 1-1.5 cm.   4 Urobotrya

Lower Taxa


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